MgO Partially Stabilized Zirconia (TTZ)
TTZ is a grade of zirconia. The graph bars on the material properties cards below compare TTZ to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Compressive (Crushing) Strength
2190 MPa 320 x 103 psi
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Flexural Strength
710 MPa 100 x 103 psi
Fracture Toughness
9.9 MPa-m1/2 9.0 x 103 psi-in1/2
Knoop Hardness
1210
Poisson's Ratio
0.29
Tensile Strength: Ultimate (UTS)
410 MPa 60 x 103 psi
Thermal Properties
Maximum Temperature: Mechanical
650 °C 1200 °F
Maximum Thermal Shock
350 °C 660 °F
Specific Heat Capacity
430 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
2.2 W/m-K 1.2 BTU/h-ft-°F
Thermal Expansion
8.8 µm/m-K
Other Material Properties
Density
5.7 g/cm3 350 lb/ft3
Dielectric Constant (Relative Permittivity) At 1 MHz
28
Dielectric Strength (Breakdown Potential)
7.7 kV/mm 0.3 V/mil
Electrical Dissipation At 1 MHz
0.0010
Electrical Resistivity Order of Magnitude
11 10x Ω-m
Common Calculations
Stiffness to Weight: Axial
19 points
Stiffness to Weight: Bending
34 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
0.88 mm2/s
Thermal Shock Resistance
17 points
Followup Questions
Further Reading
Ceramic and Glass Materials: Structure, Properties and Processing, James F. Shackelford and Robert H. Doremus (editors), 2008
Ceramics and Composites: Processing Methods, Narottam P. Bansal and Aldo R. Boccaccini (editors), 2012
Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005